Feroz Lubna, Rizvi Syed Fawad, Naz Saliha, Khan M Tanweer Hassan
Dr. Lubna Feroz, MBBS, FCPS (Ophth). Ophthalmologist, LRBT Tertiary Teaching Eye Hospital, Korangi 21/2, Karachi, Pakistan.
Dr. Syed Fawad Rizvi, MCPS (Ophth), FCPS (Ophth). Chief Consultant Ophthalmologist, LRBT Tertiary Teaching Eye Hospital, Korangi 21/2, Karachi, Pakistan.
Pak J Med Sci. 2020 Jul-Aug;36(5):1053-1057. doi: 10.12669/pjms.36.5.1995.
To determine the effectiveness of macular hole index (MHI) as a predicting factor of visual outcome after full thickness macular hole surgery.
This quasi-experimental study was conducted at LRBT Free Base Eye Hospital, Karachi from January 2018 to March 2019. Total 45 eyes of 45 patients with full thickness macular hole (FTMH) underwent preoperative Best Corrected Visual Acuity (BCVA) assessment with logMar chart and Optical Coherence Tomography (OCT) scanning, with measurement of base diameter and macular hole height. Values were calculated for the macular hole index (MHI), which was taken as the predictive factor. All patients had undergone 25G trans-conjunctival three ports pars plana vitrectomy, internal limiting membrane peeling, and endo-tamponade of CF(14%). The final visual outcome of all the patients was noted.
Forty-five patients were included for the study, out of which 10 (22.2%) were male and 35 (77.7%) were female. Age ranged from 45-70 years (mean age 57.20±6.47 years). The mean pre-operative visual acuity was 2.46±1.15 logMar and was 3.88±2.00 logMar, post-operatively. Moreover, 27(60.0%) out of 45 patients achieved BCVA (gain of 2 lines of the logMar chart). The average macular hole index was 1.55±0.50 and out of 45, 25 patients had MHI ≥0.5. It was found that patients with macular hole index ≥0.50 showed clinically significant improvement in BCVA in comparison to those who have macular hole index <0.50.
Macular hole index can be used to predict functional success in macular hole surgery.
确定黄斑裂孔指数（MHI）作为全层黄斑裂孔手术后视力预后预测因素的有效性。
本准实验研究于2018年1月至2019年3月在卡拉奇的LRBT免费基础眼科医院进行。45例全层黄斑裂孔（FTMH）患者的45只眼接受了术前使用对数视力表的最佳矫正视力（BCVA）评估和光学相干断层扫描（OCT）扫描，测量了裂孔基底直径和黄斑裂孔高度。计算黄斑裂孔指数（MHI）值，并将其作为预测因素。所有患者均接受了25G经结膜三通道玻璃体切除术、内界膜剥除术和14%的全氟丙烷（CF）眼内填充。记录所有患者的最终视力预后。
45例患者纳入研究，其中男性10例（22.2%），女性35例（77.7%）。年龄范围为45 - 70岁（平均年龄57.20±6.47岁）。术前平均视力为2.46±1.15 logMar，术后为3.88±2.00 logMar。此外，45例患者中有27例（60.0%）实现了BCVA提高（对数视力表提高2行）。平均黄斑裂孔指数为1.55±0.50，45例患者中有25例MHI≥0.5。结果发现，与黄斑裂孔指数<0.50的患者相比，黄斑裂孔指数≥0.50的患者BCVA有临床显著改善。
黄斑裂孔指数可用于预测黄斑裂孔手术的功能成功率。
